An explanation of the Mozilla Source Code Directory Structure and links toproject pages with documentation can be found at: https://developer.mozilla.org/en/Mozilla_Source_Code_Directory_StructureFor information on how to build Mozilla from the source code, see: http://developer.mozilla.org/en/docs/Build_DocumentationTo have your bug fix / feature added to Mozilla, you should create a patch andsubmit it to Bugzilla (https://bugzilla.mozilla.org). Instructions are at: http://developer.mozilla.org/en/docs/Creating_a_patch http://developer.mozilla.org/en/docs/Getting_your_patch_in_the_treeIf you have a question about developing Mozilla, and can't find the solutionon http://developer.mozilla.org, you can try asking your question in amozilla.* Usenet group, or on IRC at irc.mozilla.org. [The Mozilla news groupsare accessible on Google Groups, or news.mozilla.org with a NNTP reader.]You can download nightly development builds from the Mozilla FTP server.Keep in mind that nightly builds, which are used by Mozilla developers fortesting, may be buggy. Firefox nightlies, for example, can be found at: ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk/ - or - http://nightly.mozilla.org/